package com.lhq.gulimall.product.service.impl;

import com.alibaba.fastjson.TypeReference;
import com.lhq.common.constant.ProductConstant;
import com.lhq.common.to.SkuReductionTo;
import com.lhq.common.to.SpuBoundsTo;
import com.lhq.common.to.es.SkuEsModel;
import com.lhq.common.utils.R;
import com.lhq.gulimall.product.dao.SpuInfoDescDao;
import com.lhq.gulimall.product.entity.*;
import com.lhq.gulimall.product.feign.CouponFeignService;
import com.lhq.gulimall.product.feign.SearchFeignService;
import com.lhq.gulimall.product.feign.WareFeignService;
import com.lhq.gulimall.product.service.*;
import com.lhq.gulimall.product.vo.*;
import org.apache.commons.configuration.interpol.ExprLookup;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.math.BigDecimal;
import java.util.*;
import java.util.stream.Collectors;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.lhq.common.utils.PageUtils;
import com.lhq.common.utils.Query;

import com.lhq.gulimall.product.dao.SpuInfoDao;
import org.springframework.transaction.annotation.Transactional;


@Service("spuInfoService")
public class SpuInfoServiceImpl extends ServiceImpl<SpuInfoDao, SpuInfoEntity> implements SpuInfoService {

    @Autowired
    SpuInfoDescService spuInfoDescService;
    @Autowired
    SpuImagesService spuImagesService;
    @Autowired
    AttrService attrService;
    @Autowired
    ProductAttrValueService productAttrValueService;
    @Autowired
    SkuInfoService skuInfoService;
    @Autowired
    SkuImagesService skuImagesService;
    @Autowired
    SkuSaleAttrValueService skuSaleAttrValueService;
    @Autowired
    CouponFeignService couponFeignService;
    @Autowired
    BrandService  brandService;
    @Autowired
    CategoryService categoryService;
    @Autowired
    WareFeignService wareFeignService;
    @Autowired
    SearchFeignService searchFeignService;
    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<SpuInfoEntity> page = this.page(
                new Query<SpuInfoEntity>().getPage(params),
                new QueryWrapper<SpuInfoEntity>()
        );

        return new PageUtils(page);
    }
    /***
     * // TODO
     * @param vo
     * @return void
     * @Author lianghanqiang
     * @Date 2022/12/22 22:42
     **/
    @Transactional
    @Override
    public void saveSpuInfo(SpuSaveVo vo) {
        // 1.保存SPU基本信息 pms_spu_info
        SpuInfoEntity spuInfoEntity = new SpuInfoEntity();
        BeanUtils.copyProperties(vo, spuInfoEntity);
        spuInfoEntity.setCreateTime(new Date());
        spuInfoEntity.setUpdateTime(new Date());
        this.saveBaseSpuInfo(spuInfoEntity);

        // 2.保存SPU的描述图片 pms_spu_info_desc
        List<String> decript = vo.getDecript();
        SpuInfoDescEntity descEntity = new SpuInfoDescEntity();
        descEntity.setSpuId(spuInfoEntity.getId());
        descEntity.setDecript(String.join(",",decript));
        spuInfoDescService.saveSpuInfoDesc(descEntity);

        // 3.保存SPU的图片集 pms_spu_images
        List<String> images = vo.getImages();
        spuImagesService.saveImages(spuInfoEntity.getId(),images);

        // 4.保存SPU的规格参数 pms_product_attr_value
        List<BaseAttr> baseAttrs = vo.getBaseAttrs();
        List<ProductAttrValueEntity> collect = baseAttrs.stream().map(attr -> {
            ProductAttrValueEntity productAttrValueEntity = new ProductAttrValueEntity();
            productAttrValueEntity.setAttrId(attr.getAttrId());
            AttrEntity id = attrService.getById(attr.getAttrId());
            productAttrValueEntity.setAttrName(id.getAttrName());
            productAttrValueEntity.setAttrValue(attr.getAttrValues());
            productAttrValueEntity.setQuickShow(attr.getShowDesc());
            productAttrValueEntity.setSpuId(spuInfoEntity.getId());

            return productAttrValueEntity;
        }).collect(Collectors.toList());

        productAttrValueService.saveProductAttr(collect);

        // 5.保存SKU积分信息gulimall_sms-> sms_sku_bounds(调用另一个服务)
        Bounds bounds = vo.getBounds();
        SpuBoundsTo spuBoundsTo = new SpuBoundsTo();
        BeanUtils.copyProperties(bounds,spuBoundsTo);
        spuBoundsTo.setSpuId(spuInfoEntity.getId());
        R r=couponFeignService.saveSpuBounds(spuBoundsTo);
        if(r.getCode() != 0){
            log.error("远程保存SPU积分信息失败");
        }

        // 6.保存当前SPU的所有SKU信息
        List<Skus> skus = vo.getSkus();
        if(skus != null && skus.size() > 0){
            skus.forEach(item -> {
                // 6.1 sku基本信息 pms_sku_info
                String defaultImg = "";
                for(Images image : item.getImages()) {
                    if(image.getDefaultImg() == 1){
                        defaultImg =image.getImgUrl();
                    }
                }
                SkuInfoEntity skuInfoEntity = new SkuInfoEntity();
                BeanUtils.copyProperties(item, skuInfoEntity);
                skuInfoEntity.setBrandId(spuInfoEntity.getBrandId());
                skuInfoEntity.setCatalogId(spuInfoEntity.getCatalogId());
                skuInfoEntity.setSaleCount(0L);
                skuInfoEntity.setSpuId(spuInfoEntity.getId());
                skuInfoEntity.setSkuDefaultImg(defaultImg);
                skuInfoService.saveSkuInfo(skuInfoEntity);

                // 6.2 sku图片信息 pms_sku_images
                Long skuId = skuInfoEntity.getSkuId();
                List<SkuImagesEntity> imagesEntities = item.getImages().stream().map(img -> {
                    SkuImagesEntity skuImagesEntity = new SkuImagesEntity();
                    skuImagesEntity.setSkuId(skuId);
                    skuImagesEntity.setImgUrl(img.getImgUrl());
                    skuImagesEntity.setDefaultImg(img.getDefaultImg());
                    return skuImagesEntity;
                }).filter(entity ->{
                    return StringUtils.isNotEmpty(entity.getImgUrl());
                }).collect(Collectors.toList());
                skuImagesService.saveBatch(imagesEntities);

                // 6.3 sku销售属性信息 pms_sku_sale_attr_value
                List<Attr> attr = item.getAttr();
                List<SkuSaleAttrValueEntity> skuSaleAttrValueEntities = attr.stream().map(a -> {
                    SkuSaleAttrValueEntity skuSaleAttrValueEntity = new SkuSaleAttrValueEntity();
                    BeanUtils.copyProperties(a, skuSaleAttrValueEntity);
                    skuSaleAttrValueEntity.setSkuId(skuId);

                    return skuSaleAttrValueEntity;
                }).collect(Collectors.toList());
                skuSaleAttrValueService.saveBatch(skuSaleAttrValueEntities);

                // 6.4 sku的优惠、满减信息gulimall_sms-> sms_sku_ladder/sms_sku_full_reduction/sms_member_price
                SkuReductionTo skuReductionTo = new SkuReductionTo();
                BeanUtils.copyProperties(item,skuReductionTo);
                skuReductionTo.setSkuId(skuId);
                if(skuReductionTo.getFullCount() >0 ||
                        skuReductionTo.getFullPrice().compareTo(new BigDecimal(0) ) == 1){
                    R r1 = couponFeignService.saveSkuReduction(skuReductionTo);
                    if(r1.getCode() != 0){
                        log.error("远程保存SPU优惠信息失败");
                    }
                }
            });
        }
    }

    @Override
    public void saveBaseSpuInfo(SpuInfoEntity spuInfoEntity) {
        this.baseMapper.insert(spuInfoEntity);
    }

    @Override
    public PageUtils queryPageByCondition(Map<String, Object> params) {
        QueryWrapper<SpuInfoEntity> wrapper = new QueryWrapper<>();
        String key = (String) params.get("key");
        if(StringUtils.isNotEmpty(key)){
            wrapper.and(w->{
                w.eq("id", key).or().like("spu_name",key);
            });
        }
        String status = (String) params.get("status");
        if(StringUtils.isNotEmpty(status)){
            wrapper.eq("publish_status",status);
        }
        String brandId = (String) params.get("brandId");
        if(StringUtils.isNotEmpty(brandId) && !"0".equalsIgnoreCase(brandId)){
            wrapper.eq("brand_id",brandId);
        }
        String catelogId = (String) params.get("catelogId");
        if(StringUtils.isNotEmpty(catelogId)  && !"0".equalsIgnoreCase(catelogId)){
            wrapper.eq("catelog_id",catelogId);
        }

        IPage<SpuInfoEntity> page = this.page(
                new Query<SpuInfoEntity>().getPage(params),
                wrapper
        );

        return new PageUtils(page);
    }
    @Override
    public void up(Long spuId) {
        // 1.查出当前spuid对应的所有sku信息，品牌的名字等等。
        List<SkuInfoEntity> skus = skuInfoService.getSkusBySpuId(spuId);
        List<Long> skuIds = skus.stream().map(SkuInfoEntity::getSkuId).collect(Collectors.toList());
        // 4、查询当前sku的所有可以被用来检索的规格属性
        List<ProductAttrValueEntity> baseAttrs = productAttrValueService.baseAttrlistforspu(spuId);
        List<Long> attrIds = baseAttrs.stream().map(attr -> {
            return attr.getAttrId();
        }).collect(Collectors.toList());

        List<Long> searchAttrIds = attrService.selectSearchAttrs(attrIds);

        Set<Long> idSet = new HashSet<>(searchAttrIds);
        List<SkuEsModel.Attrs> attrs = baseAttrs.stream().filter(attr -> {
            return idSet.contains(attr.getAttrId());
        }).map(item ->{
             SkuEsModel.Attrs attrs1 = new SkuEsModel.Attrs();
             BeanUtils.copyProperties(item,attrs1);
             return attrs1;
         }).collect(Collectors.toList());

        // 1、发送远程调用，库存系统查询是否有库存
        Map<Long, Boolean> stockMap = null;
        try {
            R hasStock = wareFeignService.getSkusHasStock(skuIds);
             stockMap = hasStock.getData(new TypeReference<List<SkuHasStockVo>>(){})
                    .stream()
                    .collect(Collectors.toMap(SkuHasStockVo::getSkuId, item -> item.getHasStock()));
        }catch (Exception e) {
            log.error("库存服务查询异常，原因{}",e);
        }

        // 2.封装每个sku的信息
        Map<Long, Boolean> finalStockMap = stockMap;
        List<SkuEsModel> upProducts = skus.stream().map(sku -> {
            // 组装需要的数据
            SkuEsModel esModel = new SkuEsModel();
            BeanUtils.copyProperties(sku,esModel);
            esModel.setCatelogId(sku.getCatalogId());

            // skuPrice,skuImg
            esModel.setSkuPrice(sku.getPrice());
            esModel.setSkuImg(sku.getSkuDefaultImg());

            // 设置库存信息
            if(finalStockMap == null){
                esModel.setHasStock(true);
            }else{
                esModel.setHasStock(finalStockMap.get(sku.getSkuId()));
            }

            // TODO 2、热度评分。0，
            esModel.setHotScore(0L);

            // 3、查询品牌和分类的名字信息
            // brandName,brandImg,
            BrandEntity brandEntity = brandService.getById(esModel.getBrandId());
            esModel.setBrandName(brandEntity.getName());
            esModel.setBrandImg(brandEntity.getLogo());
            // catelogName
            CategoryEntity category = categoryService.getById(esModel.getCatelogId());
            esModel.setCatelogName(category.getName());


            // 设置检索属性
            esModel.setAttrs(attrs);
            return esModel;
        }).collect(Collectors.toList());

        // 5. 将数据发送给es进行保存，gulimall-search
        R r = searchFeignService.productStatusUp(upProducts);
        if(r.getCode() == 0){
            // 远程调用成功
            // 6.修改当前spu的状态
            baseMapper.updateSpuStatus(spuId, ProductConstant.StatusEnum.SPU_UP.getCode());
        }else{
            // 远程调用失败
            // TODO 重复调用问题 ？ 接口幂等性： 重试机制
            // Feign调用流程
            /**
             * SynchronousMethodHandler.class
             * 1.构造请求数据，将对象转为json
             * RequestTemplate template = this.buildTemplateFromArgs.create(argv);
             * 2.发送请求进行执行(执行成功会解码)
             * executeAndDecode(template, options);
             *3.执行请求会有重试机制
             *  while（true）{
             *       try {
             *                 retryer.continueOrPropagate(e);
             *            } catch (RetryableException var8) {
             *                 Throwable cause = var8.getCause();
             *         if (this.propagationPolicy == ExceptionPropagationPolicy.UNWRAP && cause != null) {
             *             throw cause;
             *          }
             *          throw var8;
             *        }
             *  }
             */
        }
    }

}